Dark Matter proton Approximately 5 oz (142 gm)

Approximately 5 oz (142 gm)

Booklet: 4” square (10 cm)

The W Boson is double-sided (it's both W- and W+)

For string theorists over 5 years of age

these super strong magnets are perfect for fridges

Dark Matter proton Approximately 5 oz (142 gm)Is DARK MATTER the key to understanding what the universe is really made of and if it will expand forever, remain static, or eventually contract? Or is it just a piece of black Swiss cheese? Dark Matter is also part of the Theoreticals 3 Pack and Darkness & Light 2 Pack. No two are exactly the same. This is the heaviest particle in the Zoo. Dark Matter is a heavyweight particle plush but also comes in a lightweight shipping saver version which is